Aiming the development of advanced and lightweight thermal neutrons shields, a new hybrid composite was developed from UHMWPE fibers, epoxy and boron carbide (B₄C) particles. The UHMWPE fibres were chosen because of their high hydrogen contents and exceptional mechanical properties. The neutrons shielding tests were performed using an optimized experimental setup at NUR research reactor, Algiers. Overall, the developed materials displayed remarkable neutrons screening performances. Meanwhile, the best performance was recorded at B₄C amount of 20 wt% with a macroscopic cross-section (Σ) of with a 0.313 cm⁻¹ equivalent to a mean free path (λ) of 2.2 cm.

为了开发先进的轻型热中子屏蔽，开发了一种由 UHMWPE 纤维、环氧树脂和碳化硼 (B ₄ C) 颗粒组成的新型混合复合材料。选择 UHMWPE 纤维是因为它们具有高氢含量和出色的机械性能。中子屏蔽测试是在阿尔及尔的 NUR 研究反应堆中使用优化的实验装置进行的。总体而言，开发的材料显示出卓越的中子筛选性能。同时，最佳性能记录在 B ₄ C 量为 20 重量％时，宏观横截面 (Σ) 为 0.313 cm ^{-1 ，}相当于平均自由程 (λ) 为 2.2 cm。